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ASP.NET MVC 5 使用autofac实现DI

分类: 文章 • 2023-04-08 13:13:51

https://www.cnblogs.com/LittleFeiHu/p/6155883.html

 

ASP.NET MVC 5 使用autofac实现DI

  • 使用Nuget添加Autofac.MVC的引用
  • 启动项设置
  • 注册Controller
  • 注册ModelBinder
  • 注册相关的web abstraction
  • 为View层启用属性注入
  • 为Action Filter启用属性注入

 

   使用Nuget添加Autofac.MVC的引用

        ASP.NET MVC 5 使用autofac实现DI

 启动项设置

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protected void Application_Start()

       {

           AreaRegistration.RegisterAllAreas();

           RouteConfig.RegisterRoutes(RouteTable.Routes);

 

 

 

           var builder = new ContainerBuilder();

 

           builder.RegisterType<BookService>().As<IBookService>();

           builder.RegisterType<Logger>().As<ILogger>();

 

           // Register your MVC controllers. (MvcApplication is the name of

           // the class in Global.asax.)

           builder.RegisterControllers(typeof(MvcApplication).Assembly);

 

           // OPTIONAL: Register model binders that require DI.

           builder.RegisterModelBinders(typeof(MvcApplication).Assembly);

           builder.RegisterModelBinderProvider();

 

           // OPTIONAL: Register web abstractions like HttpContextBase.

           builder.RegisterModule<AutofacWebTypesModule>();

 

           // OPTIONAL: Enable property injection in view pages.

           builder.RegisterSource(new ViewRegistrationSource());

 

           // OPTIONAL: Enable property injection into action filters.

           builder.RegisterFilterProvider();

 

           // Set the dependency resolver to be Autofac.

           var container = builder.Build();

           DependencyResolver.SetResolver(new AutofacDependencyResolver(container));

       }

 注册Controller

  1. 注册当前程序集下的所有Controller

    1. builder.RegisterControllers(typeof(MvcApplication).Assembly);

  2. 注册单个Controller

    1. builder.RegisterType<HomeController>().InstancePerRequest();

  注册ModelBinder

  1. 在启动项中注册ModelBinder

    1. builder.RegisterModelBinders(typeof(MvcApplication).Assembly);
      builder.RegisterModelBinderProvider();

  2. 自定义ModelBinder并且设置ModelBinderTypeAttribute

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[ModelBinderType(typeof(Book))]

public class BookModelBinder : IModelBinder

{

   public ILogger logger;

  public BookModelBinder(ILogger logger)

    {

        this.logger = logger;

    }

    public object BindModel(ControllerContext controllerContext, ModelBindingContext bindingContext)

    {

        HttpRequestBase request = controllerContext.HttpContext.Request;

       

        string title = request.Form.Get("Title");

        string BookID = request.Form.Get("BookID");

        string day = request.Form.Get("Day");

        string month = request.Form.Get("Month");

        string year = request.Form.Get("Year");

 

        return new Book { BookID=BookID, Title=title+":DI Test"+this.logger.Log("dsa")+request.Form.Get("HttpRequestBaseDI"), Date=year+"-"+month+"-"+day };

    }

 

}

 注册相关的Web Abstract Class

  1. 启动项设置

    // OPTIONAL: Register web abstractions like HttpContextBase.
      builder.RegisterModule<AutofacWebTypesModule>();

  2. 实例（在ModelBinder中使用HttpRequestBase）

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[ModelBinderType(typeof(Book))]

 public class BookModelBinder : IModelBinder

 {

    ILogger logger;

    HttpRequestBase request1;

   public BookModelBinder(ILogger logger, HttpRequestBase request)

     {

         this.logger = logger;

         this.request1 = request;

     }

     public object BindModel(ControllerContext controllerContext, ModelBindingContext bindingContext)

     {

         HttpRequestBase request = controllerContext.HttpContext.Request;

         request = request1;

         string title = request.Form.Get("Title");

         string BookID = request.Form.Get("BookID");

         string day = request.Form.Get("Day");

         string month = request.Form.Get("Month");

         string year = request.Form.Get("Year");

 

         return new Book { BookID=BookID, Title=title+":DI Test"+this.logger.Log("dsa")+request.Form.Get("HttpRequestBaseDI"), Date=year+"-"+month+"-"+day };

     }

 

 }

 在View层实现属性注入

  1. 启动项设置 
    builder.RegisterSource(new ViewRegistrationSource());
  2. 实现自定义的ViewPage

    这里的例子使用的是一个强类型的View，所以实现了一个泛型ViewPage

     public abstract class CustomViewPage<T> : WebViewPage<T>
        {
            public ILogger Logger { get; set; }
        } 
  3. View设置

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@inherits MVC5Practices.Infrastructure.CustomViewPage<MVC5Practices.Infrastructure.Book>

 

@{

    Layout = null;

}

 

<!DOCTYPE html>

 

<html>

<head>

    <meta name="viewport" content="width=device-width" />

    <title>ShowBook</title>

</head>

<body>

    <div>

        <h4>Book</h4>

        <h5>@Logger.Log("dsa")</h5>

        <hr />

        <dl class="dl-horizontal">

            <dt>

                @Html.DisplayNameFor(model => model.Title)

            </dt>

     

            <dd>

                @Html.DisplayFor(model => model.Title)

            </dd>

     

            <dt>

                @Html.DisplayNameFor(model => model.Date)

            </dt>

     

            <dd>

                @Html.DisplayFor(model => model.Date)

            </dd>

     

        </dl>

    </div>

    <p>

        @Html.ActionLink("Edit", "Edit", new { id = Model.BookID }) |

        @Html.ActionLink("Back to List", "Index")

    </p>

</body>

</html>

 为ActionFilter启用属性设置

  1. 启动项设置

    // OPTIONAL: Enable property injection into action filters.
    builder.RegisterFilterProvider();

  2. 自定义Filter

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public class CustomActionFilter : ActionFilterAttribute

   {

       public ILogger Logger { get; set; }

 

       public override void OnActionExecuting(ActionExecutingContext filterContext)

       {

           Logger.Log("OnActionExecuting");

       }

   }

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